Configuring IMAP for iPhone Sync Microsoft Exchange 2003 - Non-Clustered Configuration

In a non-clustered environment enable the service with startup type of Automatic.

Configuring Exchange 2003 IMAP Virtual Server SSL(port 993):
If you don't have an Exchange front end server, make sure that the server you use for IMAP contains the mailbox’s that you want to sync up with the iPhone. Note, if you have multiple back-end servers with no front-end then you will need to either designate one of your back-end servers as your IMAP4 service provider and house all your iPhone users on that server or you will need to manually direct each iPhone user to their homed Exchange server. In this case it is recommended practice to use a front-end server as it will locate which server your users mailbox resides on and proxy the IMAP session to that server. If you do have a front-end make sure the back-end server/servers are configured with an IMAP Virtual server and are started. Then configure the front-end IMAP Virtual server to use SSL.

If you already have an SSL Certificate installed on your Exchange Server for Outlook Web Access(OWA), then you are ready to configure the virtual server. If you don't have an SSL certificate installed on your Exchange server you must either install Certificate Services on Windows Server 2003 and issue an SSL certificate or purchase a commercial certificate through an SSL provider. The process of installing an SSL certificate has been documented, so for simplicity of this article we will not expand on that topic. To configure Secure IMAP, perform these steps.

1. Open Exchange System Manager (ESM) and select , Administrative Group, Servers, Protocols, IMAP4.
2. Right-click the Default IMAP4 Virtual Server and select Properties.
3. Select the Access Tab, and click the Certificate button.
4. Click Next.
5. Select Assign an existing Certificate and click Next.
6. Select the appropriate SSL Certificate and select Next.
7. Click Next, then click Finish.
8. Stop and restart the Default IMAP4 virtual server. You have now enabled the use of the SSL certificate with IMAP4

The Firewall between the Exchange 2003 IMAP server and the internet will need to be configured to allow traffic on port 993 to the Exchange server you have setup to be the IMAP SSL entry point.